DPDK  20.11.3
examples/multi_process/client_server_mp/mp_server/init.c
/* SPDX-License-Identifier: BSD-3-Clause
* Copyright(c) 2010-2014 Intel Corporation
*/
#include <stdint.h>
#include <stdio.h>
#include <string.h>
#include <sys/queue.h>
#include <errno.h>
#include <stdarg.h>
#include <inttypes.h>
#include <rte_common.h>
#include <rte_memory.h>
#include <rte_memzone.h>
#include <rte_eal.h>
#include <rte_byteorder.h>
#include <rte_atomic.h>
#include <rte_launch.h>
#include <rte_per_lcore.h>
#include <rte_lcore.h>
#include <rte_debug.h>
#include <rte_ring.h>
#include <rte_log.h>
#include <rte_mempool.h>
#include <rte_memcpy.h>
#include <rte_mbuf.h>
#include <rte_interrupts.h>
#include <rte_ether.h>
#include <rte_ethdev.h>
#include <rte_malloc.h>
#include <rte_string_fns.h>
#include <rte_cycles.h>
#include "common.h"
#include "args.h"
#include "init.h"
#define MBUF_CACHE_SIZE 512
#define RTE_MP_RX_DESC_DEFAULT 1024
#define RTE_MP_TX_DESC_DEFAULT 1024
#define CLIENT_QUEUE_RINGSIZE 128
#define NO_FLAGS 0
/* The mbuf pool for packet rx */
struct rte_mempool *pktmbuf_pool;
/* array of info/queues for clients */
struct client *clients = NULL;
/* the port details */
struct port_info *ports;
static int
init_mbuf_pools(void)
{
const unsigned int num_mbufs_server =
RTE_MP_RX_DESC_DEFAULT * ports->num_ports;
const unsigned int num_mbufs_client =
num_clients * (CLIENT_QUEUE_RINGSIZE +
RTE_MP_TX_DESC_DEFAULT * ports->num_ports);
const unsigned int num_mbufs_mp_cache =
(num_clients + 1) * MBUF_CACHE_SIZE;
const unsigned int num_mbufs =
num_mbufs_server + num_mbufs_client + num_mbufs_mp_cache;
/* don't pass single-producer/single-consumer flags to mbuf create as it
* seems faster to use a cache instead */
printf("Creating mbuf pool '%s' [%u mbufs] ...\n",
PKTMBUF_POOL_NAME, num_mbufs);
pktmbuf_pool = rte_pktmbuf_pool_create(PKTMBUF_POOL_NAME, num_mbufs,
MBUF_CACHE_SIZE, 0, RTE_MBUF_DEFAULT_BUF_SIZE, rte_socket_id());
return pktmbuf_pool == NULL; /* 0 on success */
}
static int
init_port(uint16_t port_num)
{
/* for port configuration all features are off by default */
const struct rte_eth_conf port_conf = {
.rxmode = {
}
};
const uint16_t rx_rings = 1, tx_rings = num_clients;
uint16_t rx_ring_size = RTE_MP_RX_DESC_DEFAULT;
uint16_t tx_ring_size = RTE_MP_TX_DESC_DEFAULT;
uint16_t q;
int retval;
printf("Port %u init ... ", port_num);
fflush(stdout);
/* Standard DPDK port initialisation - config port, then set up
* rx and tx rings */
if ((retval = rte_eth_dev_configure(port_num, rx_rings, tx_rings,
&port_conf)) != 0)
return retval;
retval = rte_eth_dev_adjust_nb_rx_tx_desc(port_num, &rx_ring_size,
&tx_ring_size);
if (retval != 0)
return retval;
for (q = 0; q < rx_rings; q++) {
retval = rte_eth_rx_queue_setup(port_num, q, rx_ring_size,
NULL, pktmbuf_pool);
if (retval < 0) return retval;
}
for ( q = 0; q < tx_rings; q ++ ) {
retval = rte_eth_tx_queue_setup(port_num, q, tx_ring_size,
NULL);
if (retval < 0) return retval;
}
retval = rte_eth_promiscuous_enable(port_num);
if (retval < 0)
return retval;
retval = rte_eth_dev_start(port_num);
if (retval < 0) return retval;
printf( "done: \n");
return 0;
}
static int
init_shm_rings(void)
{
unsigned i;
unsigned socket_id;
const char * q_name;
const unsigned ringsize = CLIENT_QUEUE_RINGSIZE;
clients = rte_malloc("client details",
sizeof(*clients) * num_clients, 0);
if (clients == NULL)
rte_exit(EXIT_FAILURE, "Cannot allocate memory for client program details\n");
for (i = 0; i < num_clients; i++) {
/* Create an RX queue for each client */
socket_id = rte_socket_id();
q_name = get_rx_queue_name(i);
clients[i].rx_q = rte_ring_create(q_name,
ringsize, socket_id,
RING_F_SP_ENQ | RING_F_SC_DEQ ); /* single prod, single cons */
if (clients[i].rx_q == NULL)
rte_exit(EXIT_FAILURE, "Cannot create rx ring queue for client %u\n", i);
}
return 0;
}
/* Check the link status of all ports in up to 9s, and print them finally */
static void
check_all_ports_link_status(uint16_t port_num, uint32_t port_mask)
{
#define CHECK_INTERVAL 100 /* 100ms */
#define MAX_CHECK_TIME 90 /* 9s (90 * 100ms) in total */
uint16_t portid;
uint8_t count, all_ports_up, print_flag = 0;
struct rte_eth_link link;
int ret;
char link_status_text[RTE_ETH_LINK_MAX_STR_LEN];
printf("\nChecking link status");
fflush(stdout);
for (count = 0; count <= MAX_CHECK_TIME; count++) {
all_ports_up = 1;
for (portid = 0; portid < port_num; portid++) {
if ((port_mask & (1 << ports->id[portid])) == 0)
continue;
memset(&link, 0, sizeof(link));
ret = rte_eth_link_get_nowait(ports->id[portid], &link);
if (ret < 0) {
all_ports_up = 0;
if (print_flag == 1)
printf("Port %u link get failed: %s\n",
portid, rte_strerror(-ret));
continue;
}
/* print link status if flag set */
if (print_flag == 1) {
rte_eth_link_to_str(link_status_text,
sizeof(link_status_text), &link);
printf("Port %d %s\n",
ports->id[portid],
link_status_text);
continue;
}
/* clear all_ports_up flag if any link down */
if (link.link_status == ETH_LINK_DOWN) {
all_ports_up = 0;
break;
}
}
/* after finally printing all link status, get out */
if (print_flag == 1)
break;
if (all_ports_up == 0) {
printf(".");
fflush(stdout);
rte_delay_ms(CHECK_INTERVAL);
}
/* set the print_flag if all ports up or timeout */
if (all_ports_up == 1 || count == (MAX_CHECK_TIME - 1)) {
print_flag = 1;
printf("done\n");
}
}
}
int
init(int argc, char *argv[])
{
int retval;
const struct rte_memzone *mz;
uint16_t i;
/* init EAL, parsing EAL args */
retval = rte_eal_init(argc, argv);
if (retval < 0)
return -1;
argc -= retval;
argv += retval;
/* set up array for port data */
mz = rte_memzone_reserve(MZ_PORT_INFO, sizeof(*ports),
rte_socket_id(), NO_FLAGS);
if (mz == NULL)
rte_exit(EXIT_FAILURE, "Cannot reserve memory zone for port information\n");
memset(mz->addr, 0, sizeof(*ports));
ports = mz->addr;
/* parse additional, application arguments */
retval = parse_app_args(argc, argv);
if (retval != 0)
return -1;
/* initialise mbuf pools */
retval = init_mbuf_pools();
if (retval != 0)
rte_exit(EXIT_FAILURE, "Cannot create needed mbuf pools\n");
/* now initialise the ports we will use */
for (i = 0; i < ports->num_ports; i++) {
retval = init_port(ports->id[i]);
if (retval != 0)
rte_exit(EXIT_FAILURE, "Cannot initialise port %u\n",
(unsigned)i);
}
check_all_ports_link_status(ports->num_ports, (~0x0));
/* initialise the client queues/rings for inter-eu comms */
init_shm_rings();
return 0;
}